diff --git a/lib/zip/entry_set.rb b/lib/zip/entry_set.rb
index 77484d1..a848fb3 100755
--- a/lib/zip/entry_set.rb
+++ b/lib/zip/entry_set.rb
@@ -13,7 +13,7 @@ module Zip
       @entry_set.include?(to_key(entry))
     end
 
-    def find_entry(entry, case_sensitively = true)
+    def find_entry(entry)
       @entry_set[to_key(entry)]
     end